zitadel/internal/eventstore/event.go
Tim Möhlmann f680dd934d
refactor: rename package errors to zerrors (#7039)
* chore: rename package errors to zerrors

* rename package errors to gerrors

* fix error related linting issues

* fix zitadel error assertion

* fix gosimple linting issues

* fix deprecated linting issues

* resolve gci linting issues

* fix import structure

---------

Co-authored-by: Elio Bischof <elio@zitadel.com>
2023-12-08 15:30:55 +01:00

108 lines
2.6 KiB
Go

package eventstore
import (
"encoding/json"
"reflect"
"time"
"github.com/zitadel/zitadel/internal/zerrors"
)
type action interface {
Aggregate() *Aggregate
// Creator is the userid of the user which created the action
Creator() string
// Type describes the action
Type() EventType
// Revision of the action
Revision() uint16
}
// Command is the intend to store an event into the eventstore
type Command interface {
action
// Payload returns the payload of the event. It represent the changed fields by the event
// valid types are:
// * nil: no payload
// * struct: which can be marshalled to json
// * pointer: to struct which can be marshalled to json
// * []byte: json marshalled data
Payload() any
// UniqueConstraints should be added for unique attributes of an event, if nil constraints will not be checked
UniqueConstraints() []*UniqueConstraint
}
// Event is a stored activity
type Event interface {
action
// Sequence of the event in the aggregate
Sequence() uint64
// CreatedAt is the time the event was created at
CreatedAt() time.Time
// Position is the global position of the event
Position() float64
// Unmarshal parses the payload and stores the result
// in the value pointed to by ptr. If ptr is nil or not a pointer,
// Unmarshal returns an error
Unmarshal(ptr any) error
// Deprecated: only use for migration
DataAsBytes() []byte
}
type EventType string
func EventData(event Command) ([]byte, error) {
switch data := event.Payload().(type) {
case nil:
return nil, nil
case []byte:
if json.Valid(data) {
return data, nil
}
return nil, zerrors.ThrowInvalidArgument(nil, "V2-6SbbS", "data bytes are not json")
}
dataType := reflect.TypeOf(event.Payload())
if dataType.Kind() == reflect.Ptr {
dataType = dataType.Elem()
}
if dataType.Kind() == reflect.Struct {
dataBytes, err := json.Marshal(event.Payload())
if err != nil {
return nil, zerrors.ThrowInvalidArgument(err, "V2-xG87M", "could not marshal data")
}
return dataBytes, nil
}
return nil, zerrors.ThrowInvalidArgument(nil, "V2-91NRm", "wrong type of event data")
}
type BaseEventSetter[T any] interface {
Event
SetBaseEvent(*BaseEvent)
*T
}
func GenericEventMapper[T any, PT BaseEventSetter[T]](event Event) (Event, error) {
e := PT(new(T))
e.SetBaseEvent(BaseEventFromRepo(event))
err := event.Unmarshal(e)
if err != nil {
return nil, zerrors.ThrowInternal(err, "ES-Thai6", "unable to unmarshal event")
}
return e, nil
}
func isEventTypes(command Command, types ...EventType) bool {
for _, typ := range types {
if command.Type() == typ {
return true
}
}
return false
}